hoffa who disappeared in 1975. investigators will dig beneath a driveway in suburban detroit. that's where a tipster claims he saw a body that might have been hoffa's being buried 37 years ago. >>> a bizarre and shocking end for a rising actor in los angeles. police say former "sons of anarchy" actor johnny lewis beat his 81-year-old landlady to death, attacked and bit two other men nearby and then fell or jumped to his own death from the roof. officials say he also savagely killed his landlady's cat in a strange rampage. lewis had been arrested three times this year, and a probation report from back in may shows that police feared the 28-year-old suffered some serious chemical dependency or mental health problems. >>> nasa's curiosity rover is beaming back new clues about the red planet's ancient and watery past. these images suggest that a waist-deep stream once rushed through this very spot on mars. most convincing proof of water on mars to date. scientists say the rounded pebbles likely shaped by fast-moving water are truly an exciting find. >>> a new analysis of beer dri